A metallic sphere ' A ' isolated from ground is charged to $+50 \mu \mathrm{C}$. This sphere is brought in contact with other isolated metallic sphere ' $B$ ' of half the radius of sphere ' $A$ '. Then the charge on the two isolated spheres A \& B are in the ratio
- A$1: 2$
- B$2: 1$
- C$4: 1$
- D$1: 1$
✓ Correct answer: B
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